diff options
Diffstat (limited to 'arch/sh/include/asm/processor_32.h')
| -rw-r--r-- | arch/sh/include/asm/processor_32.h | 114 |
1 files changed, 57 insertions, 57 deletions
diff --git a/arch/sh/include/asm/processor_32.h b/arch/sh/include/asm/processor_32.h index 0dadd75bd93..18e0377f72b 100644 --- a/arch/sh/include/asm/processor_32.h +++ b/arch/sh/include/asm/processor_32.h @@ -10,10 +10,10 @@ #ifdef __KERNEL__ #include <linux/compiler.h> +#include <linux/linkage.h> #include <asm/page.h> #include <asm/types.h> -#include <asm/cache.h> -#include <asm/ptrace.h> +#include <asm/hw_breakpoint.h> /* * Default implementation of macro that returns current @@ -26,24 +26,6 @@ #define CCN_CVR 0xff000040 #define CCN_PRR 0xff000044 -struct sh_cpuinfo { - unsigned int type; - int cut_major, cut_minor; - unsigned long loops_per_jiffy; - unsigned long asid_cache; - - struct cache_info icache; /* Primary I-cache */ - struct cache_info dcache; /* Primary D-cache */ - struct cache_info scache; /* Secondary cache */ - - unsigned long flags; -} __attribute__ ((aligned(L1_CACHE_BYTES))); - -extern struct sh_cpuinfo cpu_data[]; -#define boot_cpu_data cpu_data[0] -#define current_cpu_data cpu_data[smp_processor_id()] -#define raw_current_cpu_data cpu_data[raw_smp_processor_id()] - /* * User space process size: 2GB. * @@ -57,7 +39,7 @@ extern struct sh_cpuinfo cpu_data[]; /* This decides where the kernel will search for a free chunk of vm * space during mmap's. */ -#define TASK_UNMAPPED_BASE (TASK_SIZE / 3) +#define TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3) /* * Bit of SR register @@ -72,6 +54,15 @@ extern struct sh_cpuinfo cpu_data[]; #define SR_DSP 0x00001000 #define SR_IMASK 0x000000f0 #define SR_FD 0x00008000 +#define SR_MD 0x40000000 + +/* + * DSP structure and data + */ +struct sh_dsp_struct { + unsigned long dsp_regs[14]; + long status; +}; /* * FPU structure and data @@ -97,9 +88,9 @@ struct sh_fpu_soft_struct { unsigned long entry_pc; }; -union sh_fpu_union { - struct sh_fpu_hard_struct hard; - struct sh_fpu_soft_struct soft; +union thread_xstate { + struct sh_fpu_hard_struct hardfpu; + struct sh_fpu_soft_struct softfpu; }; struct thread_struct { @@ -107,45 +98,44 @@ struct thread_struct { unsigned long sp; unsigned long pc; - /* Hardware debugging registers */ - unsigned long ubc_pc; + /* Various thread flags, see SH_THREAD_xxx */ + unsigned long flags; - /* floating point info */ - union sh_fpu_union fpu; -}; + /* Save middle states of ptrace breakpoints */ + struct perf_event *ptrace_bps[HBP_NUM]; -/* Count of active tasks with UBC settings */ -extern int ubc_usercnt; +#ifdef CONFIG_SH_DSP + /* Dsp status information */ + struct sh_dsp_struct dsp_status; +#endif + + /* Extended processor state */ + union thread_xstate *xstate; + + /* + * fpu_counter contains the number of consecutive context switches + * that the FPU is used. If this is over a threshold, the lazy fpu + * saving becomes unlazy to save the trap. This is an unsigned char + * so that after 256 times the counter wraps and the behavior turns + * lazy again; this to deal with bursty apps that only use FPU for + * a short time + */ + unsigned char fpu_counter; +}; #define INIT_THREAD { \ .sp = sizeof(init_stack) + (long) &init_stack, \ + .flags = 0, \ } -/* - * Do necessary setup to start up a newly executed thread. - */ -#define start_thread(regs, new_pc, new_sp) \ - set_fs(USER_DS); \ - regs->pr = 0; \ - regs->sr = SR_FD; /* User mode. */ \ - regs->pc = new_pc; \ - regs->regs[15] = new_sp - /* Forward declaration, a strange C thing */ struct task_struct; -struct mm_struct; + +extern void start_thread(struct pt_regs *regs, unsigned long new_pc, unsigned long new_sp); /* Free all resources held by a thread. */ extern void release_thread(struct task_struct *); -/* Prepare to copy thread state - unlazy all lazy status */ -#define prepare_to_copy(tsk) do { } while (0) - -/* - * create a kernel thread without removing it from tasklists - */ -extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); - /* Copy and release all segment info associated with a VM */ #define copy_segments(p, mm) do { } while(0) #define release_segments(mm) do { } while(0) @@ -191,25 +181,35 @@ static __inline__ void enable_fpu(void) void show_trace(struct task_struct *tsk, unsigned long *sp, struct pt_regs *regs); + +#ifdef CONFIG_DUMP_CODE +void show_code(struct pt_regs *regs); +#else +static inline void show_code(struct pt_regs *regs) +{ +} +#endif + extern unsigned long get_wchan(struct task_struct *p); #define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc) #define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[15]) -#define cpu_sleep() __asm__ __volatile__ ("sleep" : : : "memory") -#define cpu_relax() barrier() +#if defined(CONFIG_CPU_SH2A) || defined(CONFIG_CPU_SH4) -#if defined(CONFIG_CPU_SH2A) || defined(CONFIG_CPU_SH3) || \ - defined(CONFIG_CPU_SH4) #define PREFETCH_STRIDE L1_CACHE_BYTES #define ARCH_HAS_PREFETCH #define ARCH_HAS_PREFETCHW -static inline void prefetch(void *x) + +static inline void prefetch(const void *x) { - __asm__ __volatile__ ("pref @%0\n\t" : : "r" (x) : "memory"); + __builtin_prefetch(x, 0, 3); } -#define prefetchw(x) prefetch(x) +static inline void prefetchw(const void *x) +{ + __builtin_prefetch(x, 1, 3); +} #endif #endif /* __KERNEL__ */ |